As more and more cases of COVID-19, the coronavirus, are reported across the world and in the United States, three UC Davis students learned Saturday afternoon that they aren’t among the numbers of people who have contracted the potentially deadly disease.

UCD was notified Saturday by Yolo County Public Health that the student who had appeared to be suffering from CORVID-19 had tested negative for the virus, and the two students who had been in quarantine — the man’s roommates — were allowed to go back to their normal life.

The school, however, is continuing its efforts to prevent a spread of the virus, with Student Housing and Dining Services maintaining an intensified cleaning program, university officials said in a statement. Students also are being encouraged to practice proper handwashing and good hygiene, something experts say can prevent the transmission of the virus.

The student who was cleared of the virus had been placed in isolation after showing what officials called “mild symptoms” of the coronavirus. He had been living in the dorm.

The student had a runny nose and cough and had been in close contact with someone who potentially had been exposed to coronavirus, officials said.

Using standards set by the Centers for Disease Control, the ailing man’s roommates were looking at a quarantine of at least 14 days. The three students live in Kearney Hall on the main campus.

There have been no other reports of the virus or suspected virus in Yolo County, according to an update provided Monday afternoon by both the city of Woodland and Yolo County Health Department, which emphasized that the “Immediate risk remains LOW to the general public in Yolo County.”

Both the county and city also noted that masks are not necessary for the general public and should only be worn by those health care professionals in direct contact with infected individuals.

Meanwhile, Santa Clara on Saturday reported its fourth case — a woman who is connected to the third person to be diagnosed with it in the county.

While the third person is hospitalized, the woman in the latest case is not ill or hospitalized, but is at home in isolation.